A while ago we ran into an issue with an incorrect checksum in a openldap ldif file. This means that someone has hand edited the file and caused the checksum to change without updating the checksum itself. There is a nice warning in the file but of course we as sysadmins know better that to read warnings :-/ [root@auth01 ~]# service slapd start Checking configuration files for slapd: [WARNING] 57b5d8d1 ldif_read_file: checksum error on "/etc/openldap/slapd.